目的:评估两件式氧化锆植入物系统(PURE陶瓷植入物,Straumann,巴塞尔,瑞士)在上颌骨随访期超过1年。
方法:三个中心共有19例患者在上颌骨接受了24颗单牙种植体。植入物在平均愈合时间为7.1±0.4个月(范围7至9个月)后恢复。种植体存活,植入成功,斑块指数,探测袋深度,探查时出血,粘膜衰退/爬行附着,角化粘膜宽度,修复后(T0)评估乳头指数和粉红色美学评分,6个月后(T1)和最后一次随访(T2,平均15.0±2.1个月,范围12至19个月)。
结果:所有植入物均存活,适合保留假体。记录斑块指数(0.38±0.68)和探测袋深度(2.49±0.49mm)的低值。从T0(21.7%)到T1(50.0%),探查出血显着增加(P=0.0342),然后保持稳定(T2时50.0%)。在任何植入物周围均未发现衰退。从T0到T2观察到附着水平的统计学显着增加(0.79±0.88mm;P=0.0196)。在T2时,乳头指数为2.27±0.81,粉红色的美学评分为11.67±1.60,表明美学效果完全令人满意。
结论:在本研究的局限性内,所研究的两件式氧化锆植入物系统实现了完全令人满意的功能和美学结果。
OBJECTIVE: To assess the clinical performance of a two-piece zirconia implant system (PURE Ceramic Implants, Straumann, Basel, Switzerland) in the maxilla after a follow-up period of more than 1 year.
METHODS: A total of 19 patients in three centres received 24 single-tooth implants in the maxilla. The implants were restored after a mean healing period of 7.1 ± 0.4 months (range 7 to 9 months). Implant survival, implant success, Plaque Index, probing pocket depth, bleeding on probing, mucosal recession/creeping attachment, width of keratinised mucosa, papilla index and pink aesthetic score were evaluated after prosthetic loading (T0), after 6 months (T1) and at the final follow-up (T2, mean 15.0 ± 2.1 months, range 12 to 19 months).
RESULTS: All implants survived and were suitable for retaining prostheses. Low values were recorded for Plaque Index (0.38 ± 0.68) and probing pocket depth (2.49 ± 0.49 mm). Bleeding on probing increased significantly from T0 (21.7%) to T1 (50.0%) (P = 0.0342) and then remained stable (50.0% at T2). No recession was detected around any of the implants. A statistically significant increase in attachment level was observed from T0 to T2 (0.79 ± 0.88 mm; P = 0.0196). A papilla index of 2.27 ± 0.81 and pink aesthetic score of 11.67 ± 1.60 at T2 indicated a completely satisfying aesthetic result.
CONCLUSIONS: Within the limitations of the present study, the two-piece zirconia implant system investigated achieved fully satisfying functional and aesthetic results.